一 代码结构
二 代码
1. posix_process.h
/*************************************************************************
> File Name: posix_process.h
> Author: wangzhicheng
> Mail: 2363702560@163.com
> Created Time: Thu 12 Feb 2015 07:35:34 PM WST
************************************************************************/
#ifndef POSIX_PROCESS_H
#define POSIX_PROCESS_H
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std; /* * posix process class * */ class POSIX_PROCESS { protected: pid_t mPid; posix_spawnattr_t mSpawnattr; posix_spawn_file_actions_t mFileactions; char **mArgv; char **mEnvp; string mProgram_path; public: POSIX_PROCESS(const string &program_path, char **argv, char **envp); POSIX_PROCESS(const string &program_path, char **argv, char **envp, posix_spawnattr_t &X, \ posix_spawn_file_actions_t &Y); void run(void); void join(int &value); }; #endif
2. posix_process.cpp
/*************************************************************************
> File Name: posix_process.cpp
> Author: wangzhicheng
> Mail: 2363702560@163.com
> Created Time: Thu 12 Feb 2015 07:50:36 PM WST
************************************************************************/
#include "posix_process.h"
POSIX_PROCESS::POSIX_PROCESS(const string &program_path, char **argv, char **envp) {
this->mArgv = argv;
this->mEnvp = envp;
this->mProgram_path = program_path;
posix_spawnattr_init(&this->mSpawnattr);
posix_spawn_file_actions_init(&this->mFileactions);
}
POSIX_PROCESS::POSIX_PROCESS(const string &program_path, char **argv, char **envp, posix_spawnattr_t &X, posix_spawn_file_actions_t &Y) {
this->mArgv = argv;
this->mEnvp = envp;
this->mProgram_path = program_path;
this->mSpawnattr = X;
this->mFileactions = Y;
posix_spawnattr_init(&this->mSpawnattr);
posix_spawn_file_actions_init(&this->mFileactions);
}
void POSIX_PROCESS::run(void) {
posix_spawn(&this->mPid, this->mProgram_path.c_str(), &this->mFileactions, &this->mSpawnattr, \
this->mArgv, this->mEnvp);
}
void POSIX_PROCESS::join(int &value) {
wait(&value);
}
3. schedule.cpp
/*************************************************************************
> File Name: schedule.cpp
> Author: wangzhicheng
> Mail: 2363702560@qq.com
> Created Time: Thu 12 Feb 2015 08:01:44 PM WST
************************************************************************/
#include "posix_process.h"
int main(int argc, char **argv, char **envp) {
string program_path;
cin >> program_path;
POSIX_PROCESS process(program_path, argv, envp);
int value;
process.run();
process.join(value);
return 0;
}
4. makefile
CC=g++
all:
$(CC) -g -o main schedule.cpp posix_process.cpp posix_process.h
三 程序运行截图
